Merge pull request #121 from mahagr/master

Fix #112, #113, update languages
Merge pull request #123 from mahagr/master

Kunena 2.0.4 Release
#1598 Kunena Discuss & K3.0 - Include of kunena.link.class.php
J 2.5 - K3 - Kunena Login Module :Fix couples of issues #125
Merge pull request #126 from xillibit/k30_discuss

#1598 Kunena Discuss & K3.0 - Include of kunena.link.class.php
Merge pull request #128 from xillibit/k30_addons_2

#125 J 2.5 - K3 - Kunena Login Module :Fix couples of issues
Remove xml files for Joomla 1.5
Merge pull request #127 from xillibit/k30_addons

Remove xml files for Joomla 1.5
Update copyright in modules and plugins
Discuss plugin : remove J1.5 event support
Merge pull request #129 from xillibit/k30_addons

Update copyright in modules and plugins
Merge pull request #130 from xillibit/k30_addons_2

Discuss plugin : remove J1.5 event support
Install script of addons remove j25 xml file which is useless
#131 Kunena Discuss 3.0 - Error when topic is deleted
Merge pull request #132 from xillibit/k30_addons

Install script of addons remove j25 xml file which is useless
Merge pull request #134 from xillibit/k30_addons_3

#131 Kunena Discuss 3.0 - Error when topic is deleted